Efficiency of esl goes down withing 10 minutes - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st November 2009, 04:20 PM   #1
WrineX is offline WrineX  Netherlands
diyAudio Member
 
WrineX's Avatar
 
Join Date: Mar 2004
Location: Den Haag
Default Efficiency of esl goes down withing 10 minutes

ok , this question does also herlp me withe the other thread but this is also a question in general because its not the first time this happens.

ok mylar is coated strip of copper is aplied, now, when turning on the High voltage efficiency boasted upwards as it should, nice efficiency sounds uniform so top sounds as loud as mid and the bottom of the panel. but then it slidly collapse, every 15 seconds its les efficient, here i took a few records with simple program and mic just to illustrate what happens. intervals of record are 15 to 20 seconds last 3 are intervals of 5 minutes +-
Attached Images
File Type: jpg linker.JPG (122.1 KB, 94 views)
  Reply With Quote
Old 2nd November 2009, 10:29 AM   #2
diyAudio Member
 
Join Date: Nov 2007
Location: Adelaide
It seems like you may have leakage somewhere in the membrane. What type of coating did you use? If the line continuing after the sound stops is silence your speaker seems to have some asymetry (distortion). This means the membrane may not be centred between the stators.

Keith
  Reply With Quote
Old 2nd November 2009, 03:37 PM   #3
diyAudio Member
 
Join Date: Jan 2005
Location: Berlin
Hi,

I think the membrane collapses to the stator, slowly unloads,
pops back to the center, starts singing again, until it collapses...

Regards
Frank
  Reply With Quote
Old 2nd November 2009, 08:33 PM   #4
WrineX is offline WrineX  Netherlands
diyAudio Member
 
WrineX's Avatar
 
Join Date: Mar 2004
Location: Den Haag
well keith its the school glue water based, used with alcohol verry thin substance and used roller to coat, looked verry thin and clean. not that stikcy either

well the mylar never touched the stator, so thats not problem, also it playes well first fewm minutes loud and clear without any distortion. fropm my other thread i think its the leakage, they told me to try the blinker circuit, just tried it and it blinks 2 times a sec so, for now ill try to get this fixed, after i may have the sollution from my older thread. but thx for the input. everything is welcome. more people do know more then one person alone! ofcourse there are excepts, but not me

Last edited by WrineX; 2nd November 2009 at 08:35 PM.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
humming after a few minutes qguy Subwoofers 1 5th April 2007 05:58 AM
DIY - Produce 10 Watts in 10 minutes destroyer X Solid State 43 16th November 2004 03:49 PM
0-speakers in 67 minutes maxw Multi-Way 31 3rd September 2004 06:31 AM
Your Own Homepage - in 30 minutes !!!!!! halojoy Everything Else 9 26th December 2002 06:48 AM
Audio minutes per CD?? Rick Digital Source 14 20th November 2001 08:27 AM


New To Site? Need Help?

All times are GMT. The time now is 07:10 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2